What’s the structure of methane, CH4? is it polar or non polar? A.) Trigonal planar, polar B.) Tetrahedral, non-polar C.) Tretrahedral, polar D.) Trigonal planar, non-polar

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a electronegativity decreases beacuse the size of nucleus is bigger.

i think its 100

i hope this !

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.